diff --git a/main.c b/main.c
index f1918fe..87a8fee 100644
--- a/main.c
+++ b/main.c
@@ -201,11 +201,28 @@ _tWinMain(HINSTANCE hThisInstance,
     }
 
 #ifdef DEBUG
+    WCHAR tempPath[MAX_PATH];
+    DWORD pathLen = GetTempPath(MAX_PATH, tempPath);
+    if (pathLen == 0 || pathLen > MAX_PATH)
+    {
+        MsgToEventLog(
+            EVENTLOG_ERROR_TYPE, L"Failed to get temp path. Error: %lu\n", GetLastError());
+        exit(1);
+    }
+
+    WCHAR fullPath[MAX_PATH];
+    if (!PathCombine(fullPath, tempPath, DEBUG_FILE))
+    {
+        MsgToEventLog(
+            EVENTLOG_ERROR_TYPE, L"Failed to combine temp path. Error: %lu\n", GetLastError());
+        exit(1);
+    }
+
     /* Open debug file for output */
-    if (_wfopen_s(&o.debug_fp, DEBUG_FILE, L"a+,ccs=UTF-8"))
+    if (_wfopen_s(&o.debug_fp, fullPath, L"a+,ccs=UTF-8"))
     {
         /* can't open debug file */
-        ShowLocalizedMsg(IDS_ERR_OPEN_DEBUG_FILE, DEBUG_FILE);
+        ShowLocalizedMsg(IDS_ERR_OPEN_DEBUG_FILE, fullPath);
         exit(1);
     }
     PrintDebug(_T("Starting OpenVPN GUI v%hs"), PACKAGE_VERSION);
diff --git a/main.h b/main.h
index 7094100..61c0b31 100644
--- a/main.h
+++ b/main.h
@@ -29,7 +29,7 @@
 
 /* Define this to enable DEBUG build */
 /*#define DEBUG */
-#define DEBUG_FILE         L"C:\\windows\\temp\\openvpngui_debug.txt"
+#define DEBUG_FILE         L"openvpngui_debug.txt" /* will be created in GetTempPath() directory */
 
 /* Registry key for User Settings */
 #define GUI_REGKEY_HKCU    _T("Software\\OpenVPN-GUI")